WO2017122441A1 - Coupling window of dielectric waveguide tube resonators, and dielectric waveguide tube filter using coupling window - Google Patents

Coupling window of dielectric waveguide tube resonators, and dielectric waveguide tube filter using coupling window Download PDF

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WO2017122441A1
WO2017122441A1 PCT/JP2016/085268 JP2016085268W WO2017122441A1 WO 2017122441 A1 WO2017122441 A1 WO 2017122441A1 JP 2016085268 W JP2016085268 W JP 2016085268W WO 2017122441 A1 WO2017122441 A1 WO 2017122441A1
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Prior art keywords
dielectric waveguide
coupling window
coupling
window
dielectric
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PCT/JP2016/085268
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French (fr)
Japanese (ja)
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主一 谷田部
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株式会社村田製作所
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Priority to CN201680042025.5A priority Critical patent/CN107949953A/en
Priority to JP2017561535A priority patent/JP6341341B2/en
Publication of WO2017122441A1 publication Critical patent/WO2017122441A1/en
Priority to US15/886,222 priority patent/US20180159194A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/2002—Dielectric waveguide filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/12—Hollow waveguides

Definitions

  • the present invention relates to a coupling window for coupling dielectric waveguide resonators each having a rectangular parallelepiped-shaped dielectric block covered with a conductor film, and a dielectric waveguide filter using the coupling window.
  • dielectric waveguide filters and the like a plurality of dielectric waveguide resonators are combined and used.
  • a coupling window that exposes the dielectric is formed on the opposite side of the dielectric waveguide resonator.
  • the length of the coupling window in the electric field E direction is referred to as the height of the coupling window
  • the direction orthogonal to the electric field E direction, that is, the length in the magnetic field H direction is referred to as the window width.
  • the coupling window is generally inductive coupling when the height of the window with respect to the width of the window is increased, and is capacitively coupled when the height of the window with respect to the width of the window is decreased.
  • FIG. 11 is an exploded perspective view showing a case where dielectric waveguide resonators are coupled with each other by a conventional coupling window.
  • Dielectric waveguide resonators 1 and 2 whose outer shape is a rectangular parallelepiped shape having a width A, a length L, and a height H and whose resonance mode is TE101 are arranged in the length L direction and provided at the center of the connection surface 3. Further, they are coupled by a capacitive coupling window 4 having a height h and a width w.
  • FIG. 12 and FIG. 13 show the results of electromagnetic field simulation of the change in the coupling coefficient k.
  • FIG. 12 is a graph showing changes in the coupling coefficient k when the coupling window height h is 0.1 [mm] and the coupling window width w is varied.
  • the vertical axis represents the coupling coefficient k
  • the horizontal axis represents the height w [mm] of the coupling window.
  • FIG. 13 is a graph showing a change in the coupling coefficient k when the coupling window width w is 3.4 [mm] and the coupling window height h is changed.
  • the vertical axis represents the coupling coefficient k
  • the horizontal axis represents the width h [mm] of the coupling window.
  • the coupling coefficient of the coupling window can be reduced by reducing the height of the coupling window or increasing the width of the coupling window.
  • the coupling coefficient k is approximately in the range of 0.1 to 0.15.
  • this value is too large to design a general dielectric waveguide filter. Therefore, it is necessary to reduce the coupling coefficient by increasing the width of the coupling window or decreasing the height of the coupling window.
  • the width of the coupling window can only be expanded to the width of the resonator, and the lower the coupling window height, the more the power handling characteristics deteriorate or the processing requires excessive accuracy. Problems arise.
  • Patent Document 1 As a method for solving the above problems, as described in Patent Document 1, a method of sandwiching a dielectric plate having a high dielectric constant between side surfaces has been devised. However, this method has a problem that loss due to the dielectric plate increases.
  • An object of the present invention is to obtain a dielectric waveguide resonator coupling window having high power handling characteristics and capacitively coupling with a small coupling coefficient, and a dielectric waveguide filter having the coupling window.
  • the coupling window of the dielectric waveguide resonator according to the present invention includes a dielectric window resonator having a TE-mode resonance mode between the dielectric waveguide resonators in which the exterior of a cubic dielectric is covered with a conductor film.
  • a coupling window of a dielectric waveguide resonator that is coupled by a coupling window that is exposed wherein the coupling window includes a first straight portion parallel to the H plane and one end of the first straight portion or A second linear portion extending from both ends in a direction orthogonal to the first linear portion, and a third extending from the end of the second linear portion in a direction parallel to the first linear portion. It consists of a straight part.
  • the present invention it is possible to provide a coupling window of a dielectric waveguide resonator having high power handling characteristics, a small coupling coefficient, and capable of obtaining capacitive coupling.
  • a dielectric waveguide filter having high power handling characteristics can be provided.
  • FIG. 3 is an exploded perspective view for explaining a coupling window of the dielectric waveguide resonator according to the first embodiment of the present invention. It is a top view of the coupling window of the dielectric waveguide resonator shown in FIG. It is an electromagnetic field simulation result of the dielectric waveguide resonator shown in FIG. It is a top view of the coupling window of the dielectric waveguide resonator which concerns on 2nd Embodiment of this invention. 5 is a result of electromagnetic field simulation of the dielectric waveguide resonator shown in FIG. It is a top view of the coupling window of the dielectric waveguide resonator which concerns on 3rd Embodiment of this invention.
  • FIG. 6 is an exploded perspective view of a dielectric waveguide filter according to a fourth embodiment of the present invention.
  • FIG. 9 is a schematic equivalent circuit diagram of the dielectric waveguide filter shown in FIG. 8. It is an electromagnetic field simulation result of the dielectric waveguide filter shown in FIG. It is a disassembled perspective view of the coupling window of the conventional dielectric waveguide resonator. It is an electromagnetic field simulation result of the dielectric waveguide resonator of FIG. It is an electromagnetic field simulation result of the dielectric waveguide resonator of FIG.
  • FIG. 1 is an exploded perspective view for explaining a coupling window of the dielectric waveguide resonator according to the first embodiment
  • FIG. 2 is a plan view for explaining the coupling window in detail.
  • dielectric waveguide resonators 10 and 20 having a rectangular parallelepiped shape having an outer width A, a length L, and a height H and a resonance mode TE101 are arranged in the length L direction.
  • a substantially S-shaped coupling window 40 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
  • the coupling window 40 is A first straight portion 40a parallel to the H plane; A second linear portion 40b extending in parallel with the E-plane direction and opposite to each other from both ends of the first linear portion;
  • the second straight line portion 40b includes a third straight line portion 40c extending in a direction parallel to and confronting the H surface from the tip of each second straight line portion 40b.
  • the length of the first straight portion 40a (the length in the magnetic field H direction shown in FIG. 1) is L40a
  • the length of the second straight portion 40b (the length in the direction of the electric field E shown in FIG. 1) is L40b
  • the length of the third straight portion 40c (the length in the magnetic field H direction shown in FIG. 1) is L40c.
  • the width of the first to third straight portions 40a, 40b, 40c is w40.
  • FIG. 3 shows a dielectric waveguide resonator shown in FIG.
  • the vertical axis represents the coupling coefficient k
  • the horizontal axis represents the total length L40 [mm].
  • the coupling window of the dielectric waveguide resonator according to the first embodiment can reduce the coupling coefficient to about 0.033 even though the coupling window width w40 is 0.3 [mm]. I understand.
  • FIG. 4 is a plan view for explaining in detail the coupling window of the dielectric waveguide resonator according to the second embodiment. Since the configuration other than the coupling window 41 is the same as that shown in FIG.
  • a substantially J-shaped coupling window 41 shown in FIG. 4 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
  • the coupling window 41 is A first straight portion 41a parallel to the H plane; A second linear portion 41b extending in parallel with the E-plane direction from one end of the first linear portion; The third straight portion 41c extends from the tip of the second straight portion 41b in parallel with the H plane and in the same direction as the first straight portion 41a.
  • the length of the first straight part 41a is L41a
  • the length of the second straight part 41b is L41b
  • the length of the third straight portion 41c is L41c
  • the widths of the first to third straight portions 41a, 41b, 41c are w41.
  • the dielectric waveguide resonators 10 and 20 are the same as those in the electromagnetic field simulation of the dielectric waveguide resonator according to the first embodiment shown in FIG.
  • the vertical axis indicates the coupling coefficient k, and the horizontal axis indicates the total length L41 [mm].
  • the coupling window of the dielectric waveguide resonator of the second embodiment can reduce the coupling coefficient to about 0.035 even though the coupling window width w41 is 0.3 [mm]. I understand.
  • FIG. 6 is a plan view for explaining in detail the coupling window of the dielectric waveguide resonator according to the third embodiment. Since the configuration other than the coupling window 42 is the same as that shown in FIG.
  • a substantially C-shaped coupling window 42 shown in FIG. 6 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
  • the coupling window 42 is A first straight portion 42a parallel to the H plane; A second linear portion 42b extending in parallel to the E-plane direction and in the same direction from both ends of the first linear portion;
  • the second straight line portion 42b includes a third straight line portion 42c extending in a direction parallel to the H surface and facing each other from the tip of each of the second straight line portions 42b.
  • the length of the first straight part 42a is L42a
  • the length of the second straight part 42b is L42b
  • the length of the third straight part 42c is L42c
  • the widths of the first to third straight portions 42a, 42b, and 42c are w42.
  • FIG. 7 shows a dielectric waveguide resonator shown in FIG.
  • the dielectric waveguide resonators 10 and 20 are the same as those in the electromagnetic field simulation of the dielectric waveguide resonator according to the first embodiment shown in FIG.
  • the vertical axis represents the coupling coefficient k, and the horizontal axis represents the total length L42 [mm].
  • the coupling coefficient can be reduced to about 0.040 even though the width w42 of the coupling window is 0.3 [mm]. I understand.
  • the first straight portion 40a is disposed at the center in the height direction of the connection surface.
  • the first straight portions 41a and 42a. are offset from the center in the height direction of the connection surface.
  • the second embodiment is more desirable than the first embodiment
  • the third embodiment is more desirable than the second embodiment.
  • FIG. 8 is an exploded perspective view for explaining an example of a dielectric waveguide filter using the coupling structure of dielectric waveguide resonators of the third embodiment
  • FIG. 9 is a schematic equivalent circuit diagram thereof. is there.
  • the dielectric waveguide filter 100 is composed of two rod-shaped dielectric waveguide resonator groups 101 and.
  • the dielectric waveguide resonator group 101 and the dielectric waveguide resonator group 102 are divided by an iris 50, respectively, so that the dielectric waveguide resonators 11, 12, and 13 and the dielectric waveguide resonators are divided. 21, 22, and 23 are configured.
  • the dielectric waveguide resonator group 101 and the dielectric waveguide resonator group 102 are: Dielectric waveguide resonator 11 and dielectric waveguide resonator 21, Dielectric waveguide resonator 12 and dielectric waveguide resonator 22, and The dielectric waveguide resonator 13 and the dielectric waveguide resonator 23 are disposed adjacent to each other.
  • a coupling window 44 is provided between the dielectric waveguide resonator 12 and the dielectric waveguide resonator 22, Between the dielectric waveguide resonator 13 and the dielectric waveguide resonator 23, the C-shaped coupling window 43 of the third embodiment is provided.
  • the dielectric waveguide filter 100 has a dielectric waveguide resonator 11 ⁇ 12 ⁇ 13 ⁇ 23 ⁇ 22 ⁇ 21 as a main path and a dielectric waveguide resonator 12 ⁇ 22 with interlaced coupling. It is a wave tube filter, and the iris 50 and the coupling window 43 are capacitive coupling windows.
  • FIG. 10 is a graph showing the results of electromagnetic field simulation of the electrical characteristics of the dielectric waveguide filter according to the fourth embodiment shown in FIG. 8, where the solid line is S21 (insertion loss) and the dotted line is S11 (return loss) is shown, the horizontal axis is frequency, and the vertical axis is [dB]. From the result of FIG. 10, since the dielectric waveguide filter 100 has an attenuation pole, it can be seen that the coupling window 43 is a capacitive coupling window.
  • the total length of the coupling window is set to the resonator by bending the distal end direction of the coupling window into, for example, a substantially S shape, a substantially J shape, or a substantially C shape in the connection surface. It can be larger than the width.
  • the coupling coefficient can be made significantly smaller than a simple linear coupling window.
  • a coupling window having a coupling coefficient suitable for designing a dielectric waveguide filter or the like can be obtained.
  • the coupling window of the dielectric waveguide resonator of the present invention has high power handling characteristics, it is suitable for a dielectric waveguide filter using interlaced coupling.

Abstract

A coupling window (40) of dielectric waveguide tube resonators couples together dielectric waveguide tube resonators (10 and 20) in which the exteriors of cubic dielectrics are covered with conductive films and resonance modes are TE modes. This coupling window (40) of the dielectric waveguide tube resonators is provided with: a first linear part parallel to E-surface; a second linear part extending from one or both ends of the first linear part in a direction orthogonal to the first linear part; and a third linear part extending from the end of the second linear part in a direction parallel to the first linear part.

Description

誘電体導波管共振器の結合窓およびそれを用いた誘電体導波管フィルタCoupling window of dielectric waveguide resonator and dielectric waveguide filter using the same
　本発明は、直方体形状の誘電体ブロックの周囲を導体膜で被覆した誘電体導波管共振器どうしを結合するための結合窓およびそれを用いた誘電体導波管フィルタに関する。 The present invention relates to a coupling window for coupling dielectric waveguide resonators each having a rectangular parallelepiped-shaped dielectric block covered with a conductor film, and a dielectric waveguide filter using the coupling window.
　誘電体導波管フィルタ等では、複数の誘電体導波管共振器を結合して用いている。 In dielectric waveguide filters and the like, a plurality of dielectric waveguide resonators are combined and used.
　直方体形状の誘電体の周囲を導体膜で被覆したＴＥモードの誘電体導波管共振器どうしを結合する場合、誘電体導波管共振器の対峙する側面に、誘電体が露出する結合窓を設けて誘電体導波管共振器どうしを結合する。以降、結合窓の電界Ｅ方向の長さを結合窓の高さ、電界Ｅ方向と直交する方向、すなわち、磁界Ｈ方向の長さを窓の幅と呼ぶ。 When coupling TE-mode dielectric waveguide resonators that are covered with a conductor film around a rectangular parallelepiped dielectric, a coupling window that exposes the dielectric is formed on the opposite side of the dielectric waveguide resonator. Provided to couple the dielectric waveguide resonators together. Hereinafter, the length of the coupling window in the electric field E direction is referred to as the height of the coupling window, and the direction orthogonal to the electric field E direction, that is, the length in the magnetic field H direction is referred to as the window width.
　結合窓は、窓の幅に対する窓の高さを大きくすると概ね誘導性結合となり、窓の幅に対する窓の高さを小さくすると概ね容量性結合となる。 The coupling window is generally inductive coupling when the height of the window with respect to the width of the window is increased, and is capacitively coupled when the height of the window with respect to the width of the window is decreased.
　図１１は、誘電体導波管共振器どうしを従来の結合窓で結合した場合を示す分解透視斜視図である。外形が幅Ａ、長さＬ、高さＨの直方体形状で、共振モードがＴＥ１０１の誘電体導波管共振器１、２が、長さＬ方向に並べられ、接続面３の中央に設けられた、高さｈ、幅ｗの容量性の結合窓４で結合されている。 FIG. 11 is an exploded perspective view showing a case where dielectric waveguide resonators are coupled with each other by a conventional coupling window. Dielectric waveguide resonators 1 and 2 whose outer shape is a rectangular parallelepiped shape having a width A, a length L, and a height H and whose resonance mode is TE101 are arranged in the length L direction and provided at the center of the connection surface 3. Further, they are coupled by a capacitive coupling window 4 having a height h and a width w.
　図１１において、誘電体導波管共振器１、２を、幅Ａ＝３．４［ｍｍ］、長さＬ＝３．８［ｍｍ］、高さＨ＝１．５［ｍｍ］とした場合の結合係数ｋの変化を電磁界シミュレーションした結果を、図１２と図１３に示す。 In FIG. 11, when the dielectric waveguide resonators 1 and 2 have a width A = 3.4 [mm], a length L = 3.8 [mm], and a height H = 1.5 [mm]. FIG. 12 and FIG. 13 show the results of electromagnetic field simulation of the change in the coupling coefficient k.
　図１２は、結合窓の高さｈ＝０．１［ｍｍ］とし、結合窓の幅ｗを変化させた場合の結合係数ｋの変化を示すグラフである。図１２において、縦軸は結合係数ｋ、横軸は結合窓の高さｗ［ｍｍ］を示す。 FIG. 12 is a graph showing changes in the coupling coefficient k when the coupling window height h is 0.1 [mm] and the coupling window width w is varied. In FIG. 12, the vertical axis represents the coupling coefficient k, and the horizontal axis represents the height w [mm] of the coupling window.
　図１３は、結合窓の幅ｗ＝３．４［ｍｍ］とし、結合窓の高さｈを変化させた場合の結合係数ｋの変化を示すグラフである。図１３において、縦軸は結合係数ｋ、横軸は結合窓の幅ｈ［ｍｍ］を示す。 FIG. 13 is a graph showing a change in the coupling coefficient k when the coupling window width w is 3.4 [mm] and the coupling window height h is changed. In FIG. 13, the vertical axis represents the coupling coefficient k, and the horizontal axis represents the width h [mm] of the coupling window.
　図１２と図１３の結果から、結合窓の結合係数を小さくするには、結合窓の高さを小さくするか、結合窓の幅を広くすればよいことが分かる。 12 and 13 that the coupling coefficient of the coupling window can be reduced by reducing the height of the coupling window or increasing the width of the coupling window.
特開２０１２－１９１４７４号公報JP 2012-191474 A
　図１２と図１３において、結合係数ｋはおおよそ０．１～０．１５の範囲である。しかし、この値は、一般的な誘電体導波管フィルタを設計するには大きすぎる。そのため、結合窓の幅を広くするか、結合窓の高さを低くして、結合係数を小さくする必要がある。 12 and 13, the coupling coefficient k is approximately in the range of 0.1 to 0.15. However, this value is too large to design a general dielectric waveguide filter. Therefore, it is necessary to reduce the coupling coefficient by increasing the width of the coupling window or decreasing the height of the coupling window.
　しかし、結合窓の幅は、共振器の幅までしか広げることができず、結合窓の高さは、低くするほど耐電力特性が劣化したり、加工に過大な精度が必要になったりするという問題が生じる。 However, the width of the coupling window can only be expanded to the width of the resonator, and the lower the coupling window height, the more the power handling characteristics deteriorate or the processing requires excessive accuracy. Problems arise.
　上記した問題を解決する方法として、特許文献１に記載されているように、誘電率の高い誘電体板を接続する側面に挟む方法が考案されている。しかし、この方法は誘電体板による損失が増えてしまうという問題が生じる。 As a method for solving the above problems, as described in Patent Document 1, a method of sandwiching a dielectric plate having a high dielectric constant between side surfaces has been devised. However, this method has a problem that loss due to the dielectric plate increases.
　このように、従来の誘電体導波管共振器の結合窓では、耐電力特性が高く、結合係数が小さな容量性結合を得ることが困難であった。 As described above, in the coupling window of the conventional dielectric waveguide resonator, it is difficult to obtain capacitive coupling with high power handling characteristics and a small coupling coefficient.
　本発明の目的は、耐電力特性が高く、小さな結合係数で容量性結合させる誘電体導波管共振器の結合窓、およびそれを備える誘電体導波管フィルタを得ることにある。 An object of the present invention is to obtain a dielectric waveguide resonator coupling window having high power handling characteristics and capacitively coupling with a small coupling coefficient, and a dielectric waveguide filter having the coupling window.
　本発明の誘電体導波管共振器の結合窓は、立方体形状の誘電体の外装を導体膜で被覆された、共振モードがＴＥモードの誘電体導波管共振器の間を、前記誘電体が露出する結合窓で結合する誘電体導波管共振器の結合窓であって、前記結合窓は、Ｈ面に対して並行な第１の直線部と、前記第１の直線部の一端または両端から前記第１の直線部と直交する方向に延出する前記第２の直線部と、前記第２の直線部の端から前記第１の直線部と並行な方向に延出する第３の直線部からなることを特徴とする。 The coupling window of the dielectric waveguide resonator according to the present invention includes a dielectric window resonator having a TE-mode resonance mode between the dielectric waveguide resonators in which the exterior of a cubic dielectric is covered with a conductor film. Is a coupling window of a dielectric waveguide resonator that is coupled by a coupling window that is exposed, wherein the coupling window includes a first straight portion parallel to the H plane and one end of the first straight portion or A second linear portion extending from both ends in a direction orthogonal to the first linear portion, and a third extending from the end of the second linear portion in a direction parallel to the first linear portion. It consists of a straight part.
　本発明によれば、耐電力特性が高く、結合係数の小さな、容量性結合を得ることができる誘電体導波管共振器の結合窓を提供することができる。 According to the present invention, it is possible to provide a coupling window of a dielectric waveguide resonator having high power handling characteristics, a small coupling coefficient, and capable of obtaining capacitive coupling.
　また本発明の誘電体導波管共振器の結合窓を、飛び越し結合を用いた誘電体誘電体フィルタに用いることにより、耐電力特性が高い誘電体導波管フィルタを提供することができる。 Also, by using the coupling window of the dielectric waveguide resonator of the present invention for a dielectric dielectric filter using interlaced coupling, a dielectric waveguide filter having high power handling characteristics can be provided.
本発明の第１実施形態に係る誘電体導波管共振器の結合窓を説明するための分解透視斜視図である。FIG. 3 is an exploded perspective view for explaining a coupling window of the dielectric waveguide resonator according to the first embodiment of the present invention. 図１に示した誘電体導波管共振器の結合窓の平面図である。It is a top view of the coupling window of the dielectric waveguide resonator shown in FIG. 図１に示した誘電体導波管共振器の電磁界シミュレーション結果である。It is an electromagnetic field simulation result of the dielectric waveguide resonator shown in FIG. 本発明の第２実施形態に係る誘電体導波管共振器の結合窓の平面図である。It is a top view of the coupling window of the dielectric waveguide resonator which concerns on 2nd Embodiment of this invention. 図４に示した誘電体導波管共振器の電磁界シミュレーション結果である。5 is a result of electromagnetic field simulation of the dielectric waveguide resonator shown in FIG. 本発明の第３実施形態に係る誘電体導波管共振器の結合窓の平面図である。It is a top view of the coupling window of the dielectric waveguide resonator which concerns on 3rd Embodiment of this invention. 図６に示した誘電体導波管共振器の電磁界シミュレーション結果である。It is an electromagnetic field simulation result of the dielectric waveguide resonator shown in FIG. 本発明の第４実施形態に係る誘電体導波管フィルタの分解斜透視視図である。FIG. 6 is an exploded perspective view of a dielectric waveguide filter according to a fourth embodiment of the present invention. 図８に示した誘電体導波管フィルタの模式等価回路図である。FIG. 9 is a schematic equivalent circuit diagram of the dielectric waveguide filter shown in FIG. 8. 図８に示した誘電体導波管フィルタの電磁界シミュレーション結果である。It is an electromagnetic field simulation result of the dielectric waveguide filter shown in FIG. 従来の誘電体導波管共振器の結合窓の分解斜視図である。It is a disassembled perspective view of the coupling window of the conventional dielectric waveguide resonator. 図１１の誘電体導波管共振器の電磁界シミュレーション結果である。It is an electromagnetic field simulation result of the dielectric waveguide resonator of FIG. 図１１の誘電体導波管共振器の電磁界シミュレーション結果である。It is an electromagnetic field simulation result of the dielectric waveguide resonator of FIG.
（第１実施形態）
　図１は、第１実施形態に係る誘電体導波管共振器の結合窓を説明するための分解透視斜視図であり、図２は、その結合窓を詳しく説明するための平面図である。 (First embodiment)
FIG. 1 is an exploded perspective view for explaining a coupling window of the dielectric waveguide resonator according to the first embodiment, and FIG. 2 is a plan view for explaining the coupling window in detail.
　図１と図２に示すように、外形が幅Ａ、長さＬ、高さＨの直方体形状で、共振モードがＴＥ１０１の誘電体導波管共振器１０、２０が、長さＬ方向に並べられ、誘電体導波管共振器１０、２０の間の接続面３０に略Ｓ字形状の結合窓４０が設けられている。 As shown in FIGS. 1 and 2, dielectric waveguide resonators 10 and 20 having a rectangular parallelepiped shape having an outer width A, a length L, and a height H and a resonance mode TE101 are arranged in the length L direction. In addition, a substantially S-shaped coupling window 40 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
　結合窓４０は、
Ｈ面に並行な第１の直線部４０ａと、
第１の直線部の両端からＥ面方向に並行かつ互いに逆方向に延出する第２の直線部４０ｂと、
第２の直線部４０ｂのそれぞれの先端からＨ面に並行かつ対峙する方向に延出する第３の直線部４０ｃとからなる。 The coupling window 40 is
A first straight portion 40a parallel to the H plane;
A second linear portion 40b extending in parallel with the E-plane direction and opposite to each other from both ends of the first linear portion;
The second straight line portion 40b includes a third straight line portion 40c extending in a direction parallel to and confronting the H surface from the tip of each second straight line portion 40b.
　第１の直線部４０ａの長さ（図１中に示す磁界Ｈ方向の長さ）はＬ４０ａ、
第２の直線部４０ｂの長さ（図１中に示す電界Ｅ方向の長さ）はＬ４０ｂ、
第３の直線部４０ｃの長さ（図１中に示す磁界Ｈ方向の長さ）はＬ４０ｃ、であり、
　第１～第３の直線部４０ａ、４０ｂ、４０ｃの幅は、ｗ４０である。 The length of the first straight portion 40a (the length in the magnetic field H direction shown in FIG. 1) is L40a,
The length of the second straight portion 40b (the length in the direction of the electric field E shown in FIG. 1) is L40b,
The length of the third straight portion 40c (the length in the magnetic field H direction shown in FIG. 1) is L40c.
The width of the first to third straight portions 40a, 40b, 40c is w40.
　図３は、図１に示した誘電体導波管共振器において、
結合窓４０の第３の直線部Ｌ４０ｃの長さを調節することにより、結合窓４０の全長Ｌ４０（＝Ｌ４０ａ＋Ｌ４０ｂ×２＋Ｌ４０ｃ×２）を変化させた場合の結合係数ｋを電磁界シミュレーションした結果を示すグラフである。 FIG. 3 shows a dielectric waveguide resonator shown in FIG.
FIG. 10 shows the result of electromagnetic field simulation of the coupling coefficient k when the total length L40 (= L40a + L40b × 2 + L40c × 2) of the coupling window 40 is changed by adjusting the length of the third straight line portion L40c of the coupling window 40. It is a graph.
　誘電体導波管共振器１０、２０は、図１１と図１２に示した、従来例の誘電体導波管共振器の接続窓のシミュレーションの場合と同様であり、幅Ａ＝３．４［ｍｍ］、長さＬ＝３．８［ｍｍ］、高さＨ＝１．５［ｍｍ］である。結合窓４０は、Ｌ４０ａ＝２．８［ｍｍ］、Ｌ４０ｂ＝１．２［ｍｍ］、ｗ４０＝０．３［ｍｍ］である。図２において、縦軸は結合係数ｋ、横軸は全長Ｌ４０［ｍｍ］を示す。 The dielectric waveguide resonators 10 and 20 are the same as those in the simulation of the connection window of the dielectric waveguide resonator of the conventional example shown in FIGS. 11 and 12, and the width A = 3.4 [ mm], length L = 3.8 [mm], and height H = 1.5 [mm]. The coupling window 40 has L40a = 2.8 [mm], L40b = 1.2 [mm], and w40 = 0.3 [mm]. In FIG. 2, the vertical axis represents the coupling coefficient k, and the horizontal axis represents the total length L40 [mm].
　図３の結果から、第１実施形態の誘電体導波管共振器の結合窓は、結合窓の幅ｗ４０が０．３［ｍｍ］にもかかわらず、結合係数を略０．０３３まで小さくできることが分かる。 From the result of FIG. 3, the coupling window of the dielectric waveguide resonator according to the first embodiment can reduce the coupling coefficient to about 0.033 even though the coupling window width w40 is 0.3 [mm]. I understand.
（第２実施形態）
　第１実施形態では、結合窓の第１の直線部４０ａの両端を延出したが、一端だけを延出する形状であってもよい。 (Second Embodiment)
In 1st Embodiment, although the both ends of the 1st linear part 40a of the coupling window extended, the shape which extends only one end may be sufficient.
　図４は、第２実施形態に係る誘電体導波管共振器の結合窓を詳しく説明するための平面図である。結合窓４１以外の構成は、図１と同一構成であるため、詳しい説明は省略する。 FIG. 4 is a plan view for explaining in detail the coupling window of the dielectric waveguide resonator according to the second embodiment. Since the configuration other than the coupling window 41 is the same as that shown in FIG.
　誘電体導波管共振器１０、２０の間の接続面３０に、図４に示す略Ｊ字形状の結合窓４１が設けられている。 A substantially J-shaped coupling window 41 shown in FIG. 4 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
　結合窓４１は、
Ｈ面に並行な第１の直線部４１ａと、
第１の直線部の一端からＥ面方向に並行に延出する第２の直線部４１ｂと、
第２の直線部４１ｂの先端からＨ面に並行かつ第１の直線部４１ａと同じ方向に延出する第３の直線部４１ｃとからなる。 The coupling window 41 is
A first straight portion 41a parallel to the H plane;
A second linear portion 41b extending in parallel with the E-plane direction from one end of the first linear portion;
The third straight portion 41c extends from the tip of the second straight portion 41b in parallel with the H plane and in the same direction as the first straight portion 41a.
　第１の直線部４１ａの長さはＬ４１ａ、
第２の直線部４１ｂの長さはＬ４１ｂ、
第３の直線部４１ｃの長さはＬ４１ｃ、であり、
　第１～第３の直線部４１ａ、４１ｂ、４１ｃの幅は、ｗ４１である。 The length of the first straight part 41a is L41a,
The length of the second straight part 41b is L41b,
The length of the third straight portion 41c is L41c,
The widths of the first to third straight portions 41a, 41b, 41c are w41.
　図５は、図４に示した誘電体導波管共振器において、
結合窓４１の第３の直線部Ｌ４１ｃの長さを調節することにより、結合窓４１の全長Ｌ４１（＝Ｌ４１ａ＋Ｌ４１ｂ＋Ｌ４１ｃ）を変化させた場合の結合係数ｋを電磁界シミュレーションした結果を示すグラフである。 FIG. 5 shows a dielectric waveguide resonator shown in FIG.
It is a graph which shows the result of having carried out the electromagnetic field simulation of the coupling coefficient k at the time of changing the full length L41 (= L41a + L41b + L41c) of the coupling window 41 by adjusting the length of the 3rd linear part L41c of the coupling window 41. FIG.
　誘電体導波管共振器１０、２０は、図１に示した第１実施形態の誘電体導波管共振器の電磁界シミュレーションの場合と同様である。結合窓４１は、Ｌ４１ａ＝１．５［ｍｍ］、Ｌ４１ｂ＝０．４６［ｍｍ］、ｗ４１＝０．３［ｍｍ］である。図５において、縦軸は結合係数ｋ、横軸は全長Ｌ４１［ｍｍ］を示す。 The dielectric waveguide resonators 10 and 20 are the same as those in the electromagnetic field simulation of the dielectric waveguide resonator according to the first embodiment shown in FIG. The coupling window 41 has L41a = 1.5 [mm], L41b = 0.46 [mm], and w41 = 0.3 [mm]. In FIG. 5, the vertical axis indicates the coupling coefficient k, and the horizontal axis indicates the total length L41 [mm].
　図５の結果から、第２実施形態の誘電体導波管共振器の結合窓は、結合窓の幅ｗ４１が０．３［ｍｍ］にもかかわらず、結合係数を略０．０３５まで小さくできることが分かる。 From the result of FIG. 5, the coupling window of the dielectric waveguide resonator of the second embodiment can reduce the coupling coefficient to about 0.035 even though the coupling window width w41 is 0.3 [mm]. I understand.
（第３実施形態）
　第１実施形態では、結合窓の第１の直線部４０ａの両端を夫々逆方向に延出したが、同じ側に延出してもよい。 (Third embodiment)
In 1st Embodiment, although the both ends of the 1st linear part 40a of the joint window were each extended in the reverse direction, you may extend to the same side.
　図６は、第３実施形態に係る誘電体導波管共振器の結合窓を詳しく説明するための平面図である。結合窓４２以外の構成は、図１と同一構成であるため、詳しい説明は省略する。 FIG. 6 is a plan view for explaining in detail the coupling window of the dielectric waveguide resonator according to the third embodiment. Since the configuration other than the coupling window 42 is the same as that shown in FIG.
　誘電体導波管共振器１０、２０の間の接続面３０に、図６に示す略Ｃ字形状の結合窓４２が設けられている。 A substantially C-shaped coupling window 42 shown in FIG. 6 is provided on the connection surface 30 between the dielectric waveguide resonators 10 and 20.
　結合窓４２は、
Ｈ面に並行な第１の直線部４２ａと、
第１の直線部の両端からＥ面方向に並行かつ互いに同じ方向に延出する第２の直線部４２ｂと、
第２の直線部４２ｂのそれぞれの先端からＨ面に並行かつ互いに対峙する方向に延出する第３の直線部４２ｃとからなる。 The coupling window 42 is
A first straight portion 42a parallel to the H plane;
A second linear portion 42b extending in parallel to the E-plane direction and in the same direction from both ends of the first linear portion;
The second straight line portion 42b includes a third straight line portion 42c extending in a direction parallel to the H surface and facing each other from the tip of each of the second straight line portions 42b.
　第１の直線部４２ａの長さはＬ４２ａ、
第２の直線部４２ｂの長さはＬ４２ｂ、
第３の直線部４２ｃの長さはＬ４２ｃ、
第１～第３の直線部４２ａ、４２ｂ、４２ｃの幅は、ｗ４２である。 The length of the first straight part 42a is L42a,
The length of the second straight part 42b is L42b,
The length of the third straight part 42c is L42c,
The widths of the first to third straight portions 42a, 42b, and 42c are w42.
　図７は、図６に示した誘電体導波管共振器において、
結合窓４２の第３の直線部Ｌ４２ｃの長さを調節することにより、結合窓４２の全長Ｌ４２（＝Ｌ４２ａ＋Ｌ４２ｂ×２＋Ｌ４２ｃ×２）を変化させた場合の結合係数ｋを電磁界シミュレーションした結果を示すグラフである。 FIG. 7 shows a dielectric waveguide resonator shown in FIG.
FIG. 6 shows the result of electromagnetic field simulation of the coupling coefficient k when the total length L42 (= L42a + L42b × 2 + L42c × 2) of the coupling window 42 is changed by adjusting the length of the third straight line portion L42c of the coupling window 42. It is a graph.
　誘電体導波管共振器１０、２０は、図２に示した第１実施形態の誘電体導波管共振器の電磁界シミュレーションの場合と同様である。結合窓４２は、Ｌ４２ａ＝１．６［ｍｍ］、Ｌ４２ｂ＝０．６５［ｍｍ］、ｗ４２＝０．３［ｍｍ］である。図７において、縦軸は結合係数ｋ、横軸は全長Ｌ４２［ｍｍ］を示す。 The dielectric waveguide resonators 10 and 20 are the same as those in the electromagnetic field simulation of the dielectric waveguide resonator according to the first embodiment shown in FIG. The coupling window 42 has L42a = 1.6 [mm], L42b = 0.65 [mm], and w42 = 0.3 [mm]. In FIG. 7, the vertical axis represents the coupling coefficient k, and the horizontal axis represents the total length L42 [mm].
　図７の結果から、第３実施形態の誘電体導波管共振器の結合窓では、結合窓の幅ｗ４２が０．３［ｍｍ］にもかかわらず、結合係数を略０．０４０まで小さくできることが分かる。 From the result of FIG. 7, in the coupling window of the dielectric waveguide resonator of the third embodiment, the coupling coefficient can be reduced to about 0.040 even though the width w42 of the coupling window is 0.3 [mm]. I understand.
　なお、第１実施形態では、第１の直線部４０ａが、接続面の高さ方向の中央に配置されているが、第２実施形態と第３実施形態では、第１の直線部４１ａ，４２ａが、接続面の高さ方向の中央からオフセットされて配置されている。このように、結合窓の位置がＥ面方向の中心からずれると、結合係数が小さくなるという効果が得られる。 In the first embodiment, the first straight portion 40a is disposed at the center in the height direction of the connection surface. However, in the second embodiment and the third embodiment, the first straight portions 41a and 42a. Are offset from the center in the height direction of the connection surface. As described above, when the position of the coupling window is deviated from the center in the E-plane direction, an effect that the coupling coefficient is reduced is obtained.
　なお、結合窓の全長が長いと、不要な共振が生じてフィルタの高調波に影響が出やすいため、なるべく短い方が良い。したがって、第１実施形態より第２実施形態の方が望ましく、第２実施形態より第３実施形態の方がより望ましい。 It should be noted that if the coupling window has a long overall length, unnecessary resonance occurs and the harmonics of the filter are easily affected. Therefore, the second embodiment is more desirable than the first embodiment, and the third embodiment is more desirable than the second embodiment.
（第４実施形態）
　図８は、第３実施形態の誘電体導波管共振器の結合構造を用いた誘電体導波管フィルタの一例を説明するための分解斜視図であり、図９はその模式等価回路図である。 (Fourth embodiment)
FIG. 8 is an exploded perspective view for explaining an example of a dielectric waveguide filter using the coupling structure of dielectric waveguide resonators of the third embodiment, and FIG. 9 is a schematic equivalent circuit diagram thereof. is there.
　図８と図９に示すように、誘電体導波管フィルタ１００は、２つの棒状の誘電体導波管共振器群１０１、１０２からなる。誘電体導波管共振器群１０１および誘電体導波管共振器群１０２は、それぞれ、アイリス５０で分割されて、誘電体導波管共振器１１、１２，１３および誘電体導波管共振器２１、２２、２３が構成されている。 As shown in FIGS. 8 and 9, the dielectric waveguide filter 100 is composed of two rod-shaped dielectric waveguide resonator groups 101 and. The dielectric waveguide resonator group 101 and the dielectric waveguide resonator group 102 are divided by an iris 50, respectively, so that the dielectric waveguide resonators 11, 12, and 13 and the dielectric waveguide resonators are divided. 21, 22, and 23 are configured.
　誘電体導波管共振器群１０１と誘電体導波管共振器群１０２は、
誘電体導波管共振器１１と誘電体導波管共振器２１、
誘電体導波管共振器１２と誘電体導波管共振器２２、および、
誘電体導波管共振器１３と誘電体導波管共振器２３とが隣接するように配置される。 The dielectric waveguide resonator group 101 and the dielectric waveguide resonator group 102 are:
Dielectric waveguide resonator 11 and dielectric waveguide resonator 21,
Dielectric waveguide resonator 12 and dielectric waveguide resonator 22, and
The dielectric waveguide resonator 13 and the dielectric waveguide resonator 23 are disposed adjacent to each other.
　誘電体導波管共振器１２と誘電体導波管共振器２２との間には、結合窓４４が設けられ、
誘電体導波管共振器１３と誘電体導波管共振器２３との間には、第３実施形態のＣ字形状の結合窓４３が設けられている。 A coupling window 44 is provided between the dielectric waveguide resonator 12 and the dielectric waveguide resonator 22,
Between the dielectric waveguide resonator 13 and the dielectric waveguide resonator 23, the C-shaped coupling window 43 of the third embodiment is provided.
　誘電体導波管フィルタ１００は、誘電体導波管共振器１１→１２→１３→２３→２２→２１を主経路、誘電体導波管共振器１２→２２を飛び越し結合とする、誘電体導波管フィルタであり、アイリス５０、結合窓４３は容量性の結合窓である。 The dielectric waveguide filter 100 has a dielectric waveguide resonator 11 → 12 → 13 → 23 → 22 → 21 as a main path and a dielectric waveguide resonator 12 → 22 with interlaced coupling. It is a wave tube filter, and the iris 50 and the coupling window 43 are capacitive coupling windows.
　図１０は、図８に示した、第４実施形態にかかわる誘電体導波管フィルタの電気特性を電磁界シミュレーションした結果を示すグラフであり、実線は、Ｓ２１（インサーションロス）、点線は、Ｓ１１（リターンロス）を示し、横軸は周波数、縦軸は［ｄＢ］である。図１０の結果から、誘電体導波管フィルタ１００は減衰極が存在するので、結合窓４３は容量性の結合窓であることが分かる。 FIG. 10 is a graph showing the results of electromagnetic field simulation of the electrical characteristics of the dielectric waveguide filter according to the fourth embodiment shown in FIG. 8, where the solid line is S21 (insertion loss) and the dotted line is S11 (return loss) is shown, the horizontal axis is frequency, and the vertical axis is [dB]. From the result of FIG. 10, since the dielectric waveguide filter 100 has an attenuation pole, it can be seen that the coupling window 43 is a capacitive coupling window.
　上記したように、結合窓の先端方向を接続面の中で、例えば、略Ｓ字形状、略Ｊ字形状、略Ｃ字形状に折り曲げた形状とすることにより、結合窓の全長を、共振器の幅より大きくすることができる。このとき、単なる直線形状の結合窓とするよりも、結合係数を大幅に小さくすることができる。その結果、誘電体導波管フィルタ等の設計に好適な結合係数を有する結合窓とすることができる。さらに、本発明の誘電体導波管共振器の結合窓は、耐電力特性が高いので、飛び越し結合を用いた誘電体導波管フィルタに好適である。 As described above, the total length of the coupling window is set to the resonator by bending the distal end direction of the coupling window into, for example, a substantially S shape, a substantially J shape, or a substantially C shape in the connection surface. It can be larger than the width. At this time, the coupling coefficient can be made significantly smaller than a simple linear coupling window. As a result, a coupling window having a coupling coefficient suitable for designing a dielectric waveguide filter or the like can be obtained. Further, since the coupling window of the dielectric waveguide resonator of the present invention has high power handling characteristics, it is suitable for a dielectric waveguide filter using interlaced coupling.
　上記した実施形態は、上記の例示的な実施形態に限定されるものではない。当業者は変形および変更が可能である。本明細書中に明示的に記載されている又は示唆されているか否かに関わらず、当業者であれば、本明細書の開示内容に基づいて本発明の実施形態に種々の改変を加えて実施し得る。 The above-described embodiment is not limited to the above-described exemplary embodiment. Those skilled in the art can make variations and modifications. Whether or not explicitly described or suggested herein, those skilled in the art will make various modifications to the embodiments of the present invention based on the disclosure of the present specification. Can be implemented.
１００　誘電体導波管フィルタ
１０１、１０２　誘電体導波管共振器群
１、２、１０、２０、１１、１２、１３、２１、２２、２３　誘電体導波管共振器
３、３０　接合面
４、４０、４１、４２、４３、４４　結合窓
４０ａ，４１ａ，４２ａ　第１の直線部
４０ｂ，４１ｂ，４２ｂ　第２の直線部
４０ｃ，４１ｃ，４２ｃ　第３の直線部
５０　アイリス DESCRIPTION OF SYMBOLS 100 Dielectric waveguide filter 101,102 Dielectric waveguide resonator group 1,2,10,20,11,12,13,21,22,23 Dielectric waveguide resonator 3,30 Junction surface 4 40, 41, 42, 43, 44 Joint windows 40a, 41a, 42a First straight portions 40b, 41b, 42b Second straight portions 40c, 41c, 42c Third straight portions 50 Iris

Claims (5)

  1. 　立方体形状の誘電体の外装を導体膜で被覆された、共振モードがＴＥモードの誘電体導波管共振器の間を、前記誘電体が露出する結合窓で結合する誘電体導波管共振器の結合窓であって、
    　前記結合窓は、Ｈ面に対して並行な第１の直線部と、
    　前記第１の直線部の一端または両端から前記第１の直線部と直交する方向に延出する第２の直線部と、
    　前記第２の直線部の端から前記第１の直線部と並行な方向に延出する第３の直線部からなることを特徴とする誘電体導波管共振器の結合窓。     A dielectric waveguide resonator in which a dielectric dielectric resonator having a TE-mode resonance mode is coupled by a coupling window in which the dielectric is exposed, the outer cover of which has a cubic shape covered with a conductive film. A coupling window of
    The coupling window includes a first straight portion parallel to the H plane,
    A second linear portion extending from one end or both ends of the first linear portion in a direction perpendicular to the first linear portion;
    A coupling window of a dielectric waveguide resonator, comprising a third straight line portion extending from an end of the second straight line portion in a direction parallel to the first straight line portion.
  2. 　前記結合窓は、略Ｊ字形状である、請求項１に記載の誘電体導波管結合窓。 The dielectric waveguide coupling window according to claim 1, wherein the coupling window is substantially J-shaped.
  3. 　前記結合窓は、略Ｓ字形状である、請求項１に記載の誘電体導波管結合窓。 The dielectric waveguide coupling window according to claim 1, wherein the coupling window is substantially S-shaped.
  4. 　前記結合窓は、略Ｃ字形状である、請求項１に記載の誘電体導波管結合窓。 The dielectric waveguide coupling window according to claim 1, wherein the coupling window is substantially C-shaped.
  5. 　請求項１乃至請求項４のいずれかに記載の誘電体導波管共振器の結合窓を備える、誘電体導波管フィルタ。 A dielectric waveguide filter comprising a coupling window of the dielectric waveguide resonator according to any one of claims 1 to 4.
PCT/JP2016/085268 2016-01-15 2016-11-29 Coupling window of dielectric waveguide tube resonators, and dielectric waveguide tube filter using coupling window WO2017122441A1 (en)

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